I got a mission to reduce course number in our Moodle3.02.
In 5000+ courses, there are hundreds empty courses which might be Child courses of other courses via metalink.
How to know a course is a Child of other Meta course?
In a meta course, it is easy to see how many child courses are populating users from: Users > Enrolment methods.
But, in a child course, how to find who are its parents?